STRUCT CA_MSG(9)

💖 struct ca_msg(9) — a message to/from a CI-CAM 💖

okay bestie, buckle up, because we're doing the Kernel API Manual thing today 🌸 and honestly? this one's short and sweet, so you're gonna eat it up.

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✨ NAME ✨

struct ca_msg — literally just a message going to (or coming from) a CI-CAM. that's the whole vibe 🎀

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🦋 SYNOPSIS 🦋

struct ca_msg {
    unsigned int index;
    unsigned int type;
    unsigned int length;
    unsigned char msg[256];
 };

look at her. she's gorgeous. that's the struct. copy it exactly, no cap 💅

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🌈 Members 🌈

• index — unused 🙈 (yes really, she's just sitting there)
• type — also unused 💀 (two for two, iconic)
• length — the length of the message, periodt. this one actually does something 🫶
• msg — the message itself, the main character of the whole struct 👑

not me pointing out that half these fields are decorative 😭 but fr fr, that's what the docs say, so we're saying it too.

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🌸 Description 🌸

so this struct carries a message that gets sent to, or received from, a CI CA module. that's it. that's the whole plot ✨ it's a little envelope for your data, lowkey doing exactly what it says on the tin 💌

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🧚 SEE ALSO 🧚

• Kernel file ./include/uapi/linux/dvb/ca.h
• struct ca_slot_info(9)
• struct ca_descr_info(9)
• struct ca_caps(9)
• struct ca_descr(9)

it's giving family reunion — go say hi to the siblings 💜

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and that's the whole page, bestie! 🎀 this one lives in ./include/uapi/linux/dvb and it's dated October 2026, and it's titled struct ca_msg(9) — so if you ever need to cite your sources in the group chat, you're covered 💅✨ 🦋